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-
- GFile 2.1 Tech Notes
- =====================
-
- Note - If you have not read the file README.1ST, please do so now. It
- contains particular license terms and warranty information to which
- you are implicitly agreeing by using this program.
-
- Revision History
- ========================================
- Revision 1.0 3/14/92 Original program completed, written in Visual Basic
-
- Revision 1.1 3/29/92 Fixed several bugs.
- Added View/Small and Options menu
- Made error handling more robust
-
- Revision 1.2 4/5/92 Fixed more bugs.
- Added Disk Info screens
- Changed order of selecting default destination
- for Copy/Move.
-
- Revision 1.3 4/11/92 Fixed bugs.
- Added the ability to save configuration between
- subsequent executions.
-
- Revision 1.4 4/19/92 Changed 'Selected File' listing to give date/time
- and attributes along with filename and length.
- Added 'About...' item to menu.
- Extended the configuation save/load to include the
- drives/directories being displayed, the working
- directory, and the location of GFile on the screen.
-
- Revision 1.5 5/3/92 Completely rewrote the panel display, hilighting and
- directory selection logic to make it more 'visually
- intuitive' - incorporating the idea of an 'active
- pane' and a 'destination pane' similar to many DOS
- file manipulation utilities.
- Fixed several minor bugs.
- Cleaned up the Tab Groups.
- Enhanced performance of the File Info panels.
- Decided GFile had progressed as far as it could
- using 'Out Of The Box' Visual Basic. Considered
- writing custom controls in C, decided it would be
- be better in the long run to re-write the entire
- program in C. Began development of Revision 2.0.
-
- Revision 2.0 2/25/93 Released GFile 2.0
- Added Program Groups
- Enhanced command line
- Added serialized printing/execution
- Added icons to Program Item list box.
- Many additional small enhancements.
-
- Revision 2.0A 3/12/93 Released GFile 2.0A.
- Corrected several bugs that appeared after 2.0 release
-
- Revision 2.1 11/1/93 Released GFile 2.1
- Resizable main window
- Multiple, resizable panels
- Recursive (tree) copy/move/delete
- User configurable button bars
- Enhanced dialogs - browse and options
- Enhanced help - graphical hotspots, popups, more text
- Ported code to C++, cleaned up code
-
- Notes
- =====
-
- Although GFile directly reads the group files to implement the Program Item
- lists, GFile uses DDE (program to program communication) messages with
- Program manager to make changes in group files. I chose to do it this way
- for a couple of reasons:
-
- 1. Safety. If Microsoft were to change the format of group files
- after 3.1, for example, the worst thing that would
- happen to GFile is that it wouldn't run. In particular, it would
- not write incorrectly formatted group files, since it is Program
- Manager that is actually writing the files.
-
- 2. Efficiency. Although the code to directly manipulate the group
- files would be faster than communicating with Program Manager,
- it would certainly also be much much bigger than the
- communicating code. Although I'm sure there are people who create
- dozens of program items a day - they are not the norm. Most of
- us would rather not waste the disk space re-inventing the wheel -
- even if it does spin a little bit faster.
-
- The main result of this is that when creating, destroying, or changing
- program items, you will see Program Manager come into existence as an icon
- (if it is not already running), and then go away again upon completion. If
- Program Manager is already running, and is not iconized, it will hide
- while the operation is taking place (to prevent unnecessary screen painting
- activity), and then re-appear upon completion.
-
- You will notice that when a DOS Application is minimized (iconized) the icon
- that is displayed is the standard blue DOS Icon (actually the icon for the
- winoldap program that controls the DOS Application) rather than the icon
- associated with the Program Item. Microsoft has not documented any method
- to prevent this behavior, and I've yet to discover/figure out the undocumented
- method Microsoft uses in Program Manager.
-
- GFile Hall of Fame
- ==================
-
- Thanks to the following folks for their help in designing, testing, distributing, and
- improving GFile
-
- Jack Cotterman
- John Gareri
- Tim Gleason
- Randy("I've found a GBug") Hoch
- Tim Wallace
-